Online document converter and not only

Having a free PDF version of the book available is unlikely to want to buy it in the mobi format (the free version in the mobi is often very difficult to find). But PDF is not very readable in an e-book (to put it mildly) (I will not argue about all brands and their versions, but in my Kindle this is very bad - it is not adapted to PDF and nothing can be done about it).

Prehistory

This problem has been torturing me for quite a while already, and the jump of all sorts of different self-made converters and their installation did not lead to satisfactory results. These were mainly converters for Windows, since to find something under another OS was unreal. I myself used Debian at the time, but now it is Mac OS. My searches were not crowned with success, so I abandoned this bad job until recently.

How to be?

Some time later, I again had to convert the PDF to mobi and I came across an amazingly beautiful site with a very useful functionality. It allows you to convert music, video, docks, Ebook, etc. For me personally, the Ebook section is helpful. The abundance of formats is impressive, you can convert almost any dock to mobi (or any other format) and back. I hope this site will be useful not only for me.